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Computational simulation of the influence of inert particles on incomplete combustion of methane at a low air factor

Gao, Weimin, Kong, Lingxue and Hodgson, Peter 2012, Computational simulation of the influence of inert particles on incomplete combustion of methane at a low air factor, Materials performance and characterization, vol. 1, no. 1, pp. 1-14, doi: 10.1520/MPC104531.

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Title Computational simulation of the influence of inert particles on incomplete combustion of methane at a low air factor
Author(s) Gao, Weimin
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Hodgson, Peter
Journal name Materials performance and characterization
Volume number 1
Issue number 1
Start page 1
End page 14
Total pages 14
Publisher ASTM International
Place of publication Conshohocken, Pa.
Publication date 2012
ISSN 2165-3992
Keyword(s) gas–solid flow
solid particle
species diffusion
chemical reaction
computational fluid dynamics
CFD
Summary It is well known that the gas–solid system plays a significant role in many industrial processes. It is a complex physical and chemical process, generally consisting of heat transfer, mass transfer, species diffusion, and chemical reactions. In this paper, the reaction of methane with air at a low air factor and the gas flow in a fluidized bed with 0.1 mm solid particles are computationally simulated to enable the study of the effect of the inert particles on the species diffusion and the chemical reactions. The reaction of methane and air is modeled by a two-step reaction mechanism that produces a continuous fluid phase composed of six gases (CH4, CO, O2, CO2, H2O, and N2) and discrete solid particles in the reactor. The simulation results are compared with experiment and show that the finite rate model and the eddy dissipation model can well describe the reactions of gases in high-density gas–solid systems. The distribution of each gas and the particle behaviors are analyzed for incomplete combustion at different concentrations of loaded solid particles. The inert particles change the reactions by enhancing both the chemical kinetics and the species diffusion dynamics.
Language eng
DOI 10.1520/MPC104531
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30052846

Document type: Journal Article
Collection: Institute for Frontier Materials
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